Returns the parameter of the curve at the point
(vlax-curve-getParamAtPoint curve-obj point)
Arguments
The VLA-object to be measured.
A 3D point list (in WCS) on curve-obj.
Return Values
A real number representing a parameter, if successful; otherwise nil.
Examples
Assuming that ellipseObj points to the ellipse shown in the example for vlax-curve-getArea, set OSNAP to tangent and select the point where the line is tangent to the ellipse:
_$ (setq selPt (getpoint))
(7.55765 5.55066 0.0)
Get the parameter value at the selected point:
_$ (vlax-curve-getParamAtPoint ellipseObj selPt)
4.58296
